The keys are hidden within the game, and apparently changed every time a new patch comes out. I checked the first two by trying to activate the game in steam and got an error saying I already had the product. So I know they haven't been claimed yet. The offer stands until they are all claimed.

No ginakif today, but there are some serious bundles on humble bundle right now, and some free stuff for Warframe if you scroll to the bottom of the linked page. https://www.humblebundle.com/games/daed ... le_index_2
Edit: it would seem all keys for the Warframe stuff have been taken, I'm sorry I was late on this one.

Seems to be a FPS shooter with roguelike elements such as random levels and permadeath. I've actually had my eye on it for a while.

Very nice game -- I bought it, ooh, 3 or 4 Steam sales ago.
Although a rogue-like, it is hardly unfair, but combat can be frantic.
While dodging carrots in-game you may find yourself moving and twisting on the edge of your seat.